634477774436 has 24 divisors (see below), whose sum is σ = 1212284408160. Its totient is φ = 288158832000.

The previous prime is 634477774433. The next prime is 634477774457.

634477774436 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (634477774433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5950466 + ... + 6056153.

It is an arithmetic number, because the mean of its divisors is an integer number (50511850340).

Almost surely, 2^634477774436 is an apocalyptic number.

It is an amenable number.

634477774436 is a deficient number, since it is larger than the sum of its proper divisors (577806633724).

634477774436 is a wasteful number, since it uses less digits than its factorization.

634477774436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12007835 (or 12007833 counting only the distinct ones).

The product of its digits is 199148544, while the sum is 62.

The spelling of 634477774436 in words is "six hundred thirty-four billion, four hundred seventy-seven million, seven hundred seventy-four thousand, four hundred thirty-six".